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Configuring SSH Server on Debian or Ubuntu

You can configurate the SSH Server on Debian/Ubuntu VPS by doing the following:

  1. The default SSH server configuration file is /etc/ssh/sshd_config. You need to edit this file using a text editor such as VI using the following command:
    # vi /etc/ssh/sshd_config
  2. To disable root logins, edit or add the following line:
    PermitRootLogin no
  3. To allow only specific users over SSH add the following line:
    AllowUsers bob john
  4. Change the listening port of SSH service add the following line:
    Port 11111
  5. Save and close the file.
  6. Restart the SSH service to reflect the changes using the following command:
    # service sshd restart

Congratulations, you have configured the SSH Server on Debian/Ubuntu VPS.

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